<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>arm_dotproduct_example_f32.c</title>
<title>CMSIS-DSP: arm_dotproduct_example_f32.c</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="cmsis.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<script type="text/javascript" src="printComponentTabs.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
  $(document).ready(initResizable);
  $(window).load(resizeHeight);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
  $(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 46px;">
  <td id="projectlogo"><img alt="Logo" src="CMSIS_Logo_Final.png"/></td>
  <td style="padding-left: 0.5em;">
   <div id="projectname">CMSIS-DSP
   &#160;<span id="projectnumber">Version 1.7.0</span>
   </div>
   <div id="projectbrief">CMSIS DSP Software Library</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<div id="CMSISnav" class="tabs1">
    <ul class="tablist">
      <script type="text/javascript">
		<!--
		writeComponentTabs.call(this);
		//-->
      </script>
	  </ul>
</div>
<!-- Generated by Doxygen 1.8.6 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
      <li><a href="pages.html"><span>Usage&#160;and&#160;Description</span></a></li>
      <li><a href="modules.html"><span>Reference</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.png"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="Search" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
          </span>
        </div>
      </li>
    </ul>
  </div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('arm_dotproduct_example_f32_8c-example.html','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark">&#160;</span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark">&#160;</span>Pages</a></div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle">
<div class="title">arm_dotproduct_example_f32.c</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Copyright (C) 2010-2012 ARM Limited. All rights reserved.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* $Date:         17. January 2013</span></div>
<div class="line"><span class="comment">* $Revision:     V1.4.0</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Project:       CMSIS DSP Library</span></div>
<div class="line"><span class="comment">* Title:         arm_dotproduct_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description:   Example code computing dot product of two vectors.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
<div class="line"><span class="comment">* are met:</span></div>
<div class="line"><span class="comment">*   - Redistributions of source code must retain the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><span class="comment">*   - Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><span class="comment">*     the documentation and/or other materials provided with the</span></div>
<div class="line"><span class="comment">*     distribution.</span></div>
<div class="line"><span class="comment">*   - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
<div class="line"><span class="comment">*     may be used to endorse or promote products derived from this</span></div>
<div class="line"><span class="comment">*     software without specific prior written permission.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
<div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
<div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
<div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
<div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
<div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
<div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><span class="comment"> * -------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Defines each of the tests performed</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="preprocessor">#define MAX_BLOCKSIZE     32</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define DELTA           (0.000001f)</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Test input data for Floating point Dot Product example for 32-blockSize</span></div>
<div class="line"><span class="comment">* Generated by the MATLAB randn() function</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">** Test input data of srcA for blockSize 32</span></div>
<div class="line"><span class="comment">** ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a0"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">srcA_buf_f32</a>[<a name="a1"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =</div>
<div class="line">{</div>
<div class="line">  -0.4325648115282207,  -1.6655843782380970,  0.1253323064748307,</div>
<div class="line">   0.2876764203585489,  -1.1464713506814637,  1.1909154656429988,</div>
<div class="line">   1.1891642016521031,  -0.0376332765933176,  0.3272923614086541,</div>
<div class="line">   0.1746391428209245,  -0.1867085776814394,  0.7257905482933027,</div>
<div class="line">  -0.5883165430141887,   2.1831858181971011, -0.1363958830865957,</div>
<div class="line">   0.1139313135208096,   1.0667682113591888,  0.0592814605236053,</div>
<div class="line">  -0.0956484054836690,  -0.8323494636500225,  0.2944108163926404,</div>
<div class="line">  -1.3361818579378040,   0.7143245518189522,  1.6235620644462707,</div>
<div class="line">  -0.6917757017022868,   0.8579966728282626,  1.2540014216025324,</div>
<div class="line">  -1.5937295764474768,  -1.4409644319010200,  0.5711476236581780,</div>
<div class="line">  -0.3998855777153632,   0.6899973754643451</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">** Test input data of srcB for blockSize 32</span></div>
<div class="line"><span class="comment">** ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a2"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a67d9082c1585d4854ae9ca38db170ff5">srcB_buf_f32</a>[<a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =</div>
<div class="line">{</div>
<div class="line">   1.7491401329284098,  0.1325982188803279,   0.3252281811989881,</div>
<div class="line">  -0.7938091410349637,  0.3149236145048914,  -0.5272704888029532,</div>
<div class="line">   0.9322666565031119,  1.1646643544607362,  -2.0456694357357357,</div>
<div class="line">  -0.6443728590041911,  1.7410657940825480,   0.4867684246821860,</div>
<div class="line">   1.0488288293660140,  1.4885752747099299,   1.2705014969484090,</div>
<div class="line">  -1.8561241921210170,  2.1343209047321410,   1.4358467535865909,</div>
<div class="line">  -0.9173023332875400, -1.1060770780029008,   0.8105708062681296,</div>
<div class="line">   0.6985430696369063, -0.4015827425012831,   1.2687512030669628,</div>
<div class="line">  -0.7836083053674872,  0.2132664971465569,   0.7878984786088954,</div>
<div class="line">   0.8966819356782295, -0.1869172943544062,   1.0131816724341454,</div>
<div class="line">   0.2484350696132857,  0.0596083377937976</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="comment">/* Reference dot product output */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a3"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> = 5.9273644806352142;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Declare Global variables</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a4"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[<a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>];  <span class="comment">/* Intermediate output */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a5"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>;  <span class="comment">/* Final ouput */</span></div>
<div class="line"></div>
<div class="line"><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6">arm_status</a> <a name="a6"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;   <span class="comment">/* Status of the example */</span></div>
<div class="line"></div>
<div class="line">int32_t <a name="a7"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line">  uint32_t i;       <span class="comment">/* Loop counter */</span></div>
<div class="line">  <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> diff;     <span class="comment">/* Difference between reference and test outputs */</span></div>
<div class="line"></div>
<div class="line">  <span class="comment">/* Multiplication of two input buffers */</span></div>
<div class="line">  <a name="a8"></a><a class="code" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b">arm_mult_f32</a>(<a class="code" href="arm__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">srcA_buf_f32</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#a67d9082c1585d4854ae9ca38db170ff5">srcB_buf_f32</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>);</div>
<div class="line"></div>
<div class="line">  <span class="comment">/* Accumulate the multiplication output values to</span></div>
<div class="line"><span class="comment">     get the dot product of the two inputs */</span></div>
<div class="line">  <span class="keywordflow">for</span>(i=0; i&lt; <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>; i++)</div>
<div class="line">  {</div>
<div class="line">    <a name="a9"></a><a class="code" href="group__BasicAdd.html#gabfef1e86e458314a61f4baa441d9765e">arm_add_f32</a>(&amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>, &amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[i], &amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>, 1);</div>
<div class="line">  }</div>
<div class="line"></div>
<div class="line">  <span class="comment">/* absolute value of difference between ref and test */</span></div>
<div class="line">  diff = fabsf(<a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> - <a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>);</div>
<div class="line"></div>
<div class="line">  <span class="comment">/* Comparison of dot product value with reference */</span></div>
<div class="line">  <span class="keywordflow">if</span> (diff &gt; <a name="a10"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)</div>
<div class="line">  {</div>
<div class="line">    <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a name="a11"></a><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;</div>
<div class="line">  }</div>
<div class="line"></div>
<div class="line">  <span class="keywordflow">if</span> ( <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> == <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>)</div>
<div class="line">  {</div>
<div class="line">    <span class="keywordflow">while</span> (1);</div>
<div class="line">  }</div>
<div class="line"></div>
<div class="line">  <span class="keywordflow">while</span> (1);                             <span class="comment">/* main function does not return */</span></div>
<div class="line">}</div>
<div class="line"></div>
</div><!-- fragment --> </div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="footer">Generated on Wed Jul 10 2019 15:20:38 for CMSIS-DSP Version 1.7.0 by Arm Ltd. All rights reserved.
	<!--
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 
	-->
	</li>
  </ul>
</div>
</body>
</html>
